survey_time {nanonext}

Set Survey Time

Description

For a socket or context using the surveyor protocol in a surveyor/respondent pattern. Set the survey timeout in milliseconds (remains valid for all subsequent surveys). Messages received by the surveyor after the timer has ended are discarded.

Usage

survey_time(con, value = 1000L)

Arguments

con

a Socket or Context using the 'surveyor' protocol.

value

[default 1000L] integer survey timeout in milliseconds.

Details

After using this function, to start a new survey, the surveyor must:

• send a message.

• switch to receiving responses.

To respond to a survey, the respondent must:

• receive the survey message.

• send a reply using send_aio before the survey has timed out (a reply can only be sent after receiving a survey).

Value

Invisibly, the passed Socket or Context.

Examples

sur <- socket("surveyor", listen = "inproc://nanonext")
res <- socket("respondent", dial = "inproc://nanonext")

survey_time(sur, 1000)

send(sur, "reply to this survey")
aio <- recv_aio(sur)

recv(res)
s <- send_aio(res, "replied")

call_aio(aio)$data

close(sur)
close(res)